Locomotive driving box



I Nov. 2 1926.-

J. G. BLUNT LOCOMOTIVE DRIVING BOX Original Filed Feb. 23. 1924 Sheets-Sheei 1 Nov. 2 1926.

J. G. BLUNT LOCOMOTIVE DRIVING BOX Original Filed Feb. 25. 1924 2 Sneets-Sheei 2 New. 2, 19253 rte-s tar rf itlii TENT JAMES G. BLU NT, F SCHEITEGTADY, NEW YORK.

LOCOMOTIVE DRIVING BOX;

Griginal application filed February 23, 1924, Serial No. 694.741. Divided and. this application filed May My invention more particularly relates to locomotive driving boxes of the general class or type in which an increase of journal bearing surface is attained by the application of supplemental bearings, fitted in the driving box below the crown brass thereof, and is an improvement upon that set forth in Letters Patent of the United States No. 1,485,952, granted and issued to me under date of March 4:, 1924:.

The object of my present invention is to provide a lubricant cellar, of improved construction, which will be readil insertible in, and removable from, a locomotive driving box, and which, when in operative posltion, will, in addition to acting as a lubricant container, perform the function of a strut or expander to overcome thetendency of the driving box to close in on the journal. Further objects of my invention are to provide improved means for the connection and adjustment of a lubricant cellar of such type, particularly in three cylinder locomotives, and an improved. construction of supplemental bearings, fitted below the crown brass, and of their adjusting appliances.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings: Figure 1 is a front view, in elevation, of a locomotive driving box, illustrating an embodiment of my invention; Fig. 2, a view, in perspective, of a lubricant cellar; Fig. 3, a similar view of a supplemental bearing; Fig. 4, a similar view of the lower portion of one side of the driving box; Fig. 5, a similar view of an adjusting bolt; Fig. 6, a similar view of an adjusting bolt nut, and, Fig. 7, a. partial front view, in elevation, of a locomotive driving box, illustrating a modification of structural detail.

In the practice of my invention, referring descriptively to the specific embodiment thereof which is herein exemplified, the driving box, 1, is provided with a crown brass,

1, and two supplemental bearings, 2, located below the crown brass and oppositely inclined faces, 1 are formed on the lower edges of the crown brass, said faces fitting against the driving box and the supplemental bearings, respectively. Horizontal dovetail sockets, 1", are formed on the inner sides of the side walls of the driving box, said sockets communicating with vertical channels, 1, in the outer sides thereof, which Serial No. 31,812.

are adapted to admit T headed adjusting bolts, 4. Lugs, 2 are formed on the outer sides of the supplemental bearings, 2, at the ends thereof, the bottoms of said lugs being inclined to form bearing faces for sleeve nuts, 4 by which the supplemental bearings are secur-ed in place. The holes in the lugs of said bearing through which the bolts, 4", pass, are slotted,to form an inlet for the bolts when the sleeve nuts are removed. Lugs, 8 are formed at the four corners of the cellar, 3, said lugs having elongated holes, 3 to permit the cellar to be raised vertically into position after the supplemental bearing and T headed bolts have been put in place. The cellar fits between faces, 1, at the bottoms of the side walls of the driving box, abut-ting thereon by inclined faces, 3*, and is secured in position by sleeve nuts, 4:, bearing on inclined faces on the bottoms of the lugs, 3

In the modification of structural detail shown in Fig. 7, the inclined faces, 3 of the lubricant cellar, 3, are located at a higher level thereon than in the form shown in Fig. 1, and bear on inclined faces on the supplemental bearings, 2, instead of on the driving box, as in Fig. 1.

Adjustment for wear of bearings is effected b removing the necessary amount of meta from the top edges of the supplemental bearings, when they are in contact with the crown brass, and drawing the bearings up into position by tightening the sleeve nuts, i on the bolts, 4

I claim as my invention and desire to secure by Letters Patent:

1. The combination of a locomotive driving box, having sockets on the inner surfaces of its side walls; a crown brass; supplemental bearings, abutting at their tops against the crown brass; adjusting bolts, engaging the sockets, of the driving box; and nuts, engaging said bolts and bearing on the supplemental bearings.

2. The combination of a locomotive driving box having sockets in the inner faces of its side walls; a crown brass, having 0ppositely inclined faces at the bottoms of its.

sides, and outer faces abutting correspondingly inclined faces in the driving box; supplemental bearings, having inclined faces at their tops, abutting the inner inclined faces of the crown brass, and laterally projecting bottom lugs; T headed adjusting bolts, en-

gaging the sockets of the driving box; and nuts, engaging said bolts and bearing on the lugs of the supplemental bearings. i

3. The combination of: a locomotive driving box, having sockets in the inner surfaces of its side walls; a crown brass, having op' positely inclined faces at the bottoms of its sides, the outer faces abutting corresponding inclined faces on the driving box; supplemental bearings, having inclined faces at their tops, abutting the inner inclined faces of the crown brass, and laterally projecting bottom lugs; T headed adjusting bolts, engaging the grooves of the driving box; a lubricant cellar, fitting between, and bearing on, the inclined surfaces of the driving box; nuts engaging the adjusting bolts and bearing on the bottom lugs of the supplemental bearings, said bolts extending through and supporting the lubricant cellar.

JAMES G. BLUNT. 

